Commit 998f3331 authored Jul 26, 2019 by Sami Tolvanen

ANDROID: kbuild: avoid excessively long argument lists



With LTO, modules with a large number of compilation units maybe end
up exceeding the for loop argument list in the shell. Reduce the
probability for this happening by including only the modules that have
exported symbols.

Bug: 150234396
Change-Id: I4a289aff47e1444aca28d1bd00b125628f39bcd5
Suggested-by: Hsiu-Chang Chen <hsiuchangchen@google.com>
Signed-off-by: Sami Tolvanen <samitolvanen@google.com>

parent 6f2a9a35

scripts/Makefile.build

+6 −7

Original line number	Diff line number	Diff line
		@@ -464,11 +464,10 @@ ifdef CONFIG_LTO_CLANG
		# combine symversions for later processing
		update_lto_symversions = \
		rm -f $@.symversions; \
		for i in $(filter-out FORCE,$^); do \
		if [ -f $$i.symversions ]; then \
		cat $$i.symversions \
		>> $@.symversions; \
		fi; \
		for i in $(foreach n, \
		$(filter-out FORCE,$^), \
		$(if $(wildcard $(n).symversions),$(n))); do \
		cat $$i.symversions >> $@.symversions; \
		done;
		endif
		# rebuild the symbol table with llvm-ar to include IR files